Well, this seems to have solved the problem for 2 recent posters here above, so that’s… 2/3?
(The problem is also confirmed to occur with other SmartApps, btw: Newly installed smart apps not showing in mobile app).
Are you on NA01 (graph.api.smartthings.com), NA02, or EU01? Perhaps the Region / Shard makes a difference?
Still waiting as more cases trickle in to see if there is any pattern. It might still help if you report to Support@SmartThings.com; be sure to give them permission to browse around your Account in your opening email. Thanks.